EP2115743A1 - Systems, methods, and apparatus for signal separation - Google Patents

Systems, methods, and apparatus for signal separation

Info

Publication number
EP2115743A1
EP2115743A1 EP08714254A EP08714254A EP2115743A1 EP 2115743 A1 EP2115743 A1 EP 2115743A1 EP 08714254 A EP08714254 A EP 08714254A EP 08714254 A EP08714254 A EP 08714254A EP 2115743 A1 EP2115743 A1 EP 2115743A1
Authority
EP
European Patent Office
Prior art keywords
signal
source
channel
transducers
coefficient values
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08714254A
Other languages
German (de)
English (en)
French (fr)
Inventor
Erik Visser
Kwok-Leung Chan
Hyun Jin Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of EP2115743A1 publication Critical patent/EP2115743A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0272—Voice signal separating

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)
EP08714254A 2007-02-26 2008-02-26 Systems, methods, and apparatus for signal separation Withdrawn EP2115743A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US89167707P 2007-02-26 2007-02-26
PCT/US2008/055050 WO2008106474A1 (en) 2007-02-26 2008-02-26 Systems, methods, and apparatus for signal separation

Publications (1)

Publication Number Publication Date
EP2115743A1 true EP2115743A1 (en) 2009-11-11

Family

ID=39345147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08714254A Withdrawn EP2115743A1 (en) 2007-02-26 2008-02-26 Systems, methods, and apparatus for signal separation

Country Status (7)

Country Link
US (1) US20080208538A1 (ko)
EP (1) EP2115743A1 (ko)
JP (2) JP2010519602A (ko)
KR (1) KR20090123921A (ko)
CN (1) CN101622669B (ko)
TW (1) TW200849219A (ko)
WO (1) WO2008106474A1 (ko)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7099821B2 (en) * 2003-09-12 2006-08-29 Softmax, Inc. Separation of target acoustic signals in a multi-transducer arrangement
JP2009529699A (ja) 2006-03-01 2009-08-20 ソフトマックス，インコーポレイテッド 分離信号を生成するシステムおよび方法
CN101039534B (zh) * 2006-03-15 2012-06-20 鸿富锦精密工业（深圳）有限公司 声音检测设备和自动传送装置
US8898036B2 (en) 2007-08-06 2014-11-25 Rosemount Inc. Process variable transmitter with acceleration sensor
US8254588B2 (en) 2007-11-13 2012-08-28 Stmicroelectronics Asia Pacific Pte., Ltd. System and method for providing step size control for subband affine projection filters for echo cancellation applications
US8600740B2 (en) * 2008-01-28 2013-12-03 Qualcomm Incorporated Systems, methods and apparatus for context descriptor transmission
US8321214B2 (en) * 2008-06-02 2012-11-27 Qualcomm Incorporated Systems, methods, and apparatus for multichannel signal amplitude balancing
WO2009151578A2 (en) * 2008-06-09 2009-12-17 The Board Of Trustees Of The University Of Illinois Method and apparatus for blind signal recovery in noisy, reverberant environments
KR101233271B1 (ko) * 2008-12-12 2013-02-14 신호준 신호 분리 방법, 상기 신호 분리 방법을 이용한 통신 시스템 및 음성인식시스템
US8208649B2 (en) * 2009-04-28 2012-06-26 Hewlett-Packard Development Company, L.P. Methods and systems for robust approximations of impulse responses in multichannel audio-communication systems
JP5375400B2 (ja) * 2009-07-22 2013-12-25 ソニー株式会社 音声処理装置、音声処理方法およびプログラム
US20110096915A1 (en) * 2009-10-23 2011-04-28 Broadcom Corporation Audio spatialization for conference calls with multiple and moving talkers
US9031221B2 (en) * 2009-12-22 2015-05-12 Cyara Solutions Pty Ltd System and method for automated voice quality testing
CN102859591B (zh) * 2010-04-12 2015-02-18 瑞典爱立信有限公司 用于语音编码器中的噪声消除的方法和装置
WO2012107561A1 (en) * 2011-02-10 2012-08-16 Dolby International Ab Spatial adaptation in multi-microphone sound capture
US9207670B2 (en) 2011-03-21 2015-12-08 Rosemount Inc. Degrading sensor detection implemented within a transmitter
CN102890936A (zh) * 2011-07-19 2013-01-23 联想(北京)有限公司 一种音频处理方法、终端设备及系统
KR20130014895A (ko) * 2011-08-01 2013-02-12 한국전자통신연구원 음원 분리 기준 결정 장치와 방법 및 음원 분리 장치와 방법
US11665482B2 (en) 2011-12-23 2023-05-30 Shenzhen Shokz Co., Ltd. Bone conduction speaker and compound vibration device thereof
US9146301B2 (en) * 2012-01-25 2015-09-29 Fuji Xerox Co., Ltd. Localization using modulated ambient sounds
US9282405B2 (en) * 2012-04-24 2016-03-08 Polycom, Inc. Automatic microphone muting of undesired noises by microphone arrays
US20130315402A1 (en) * 2012-05-24 2013-11-28 Qualcomm Incorporated Three-dimensional sound compression and over-the-air transmission during a call
US9052240B2 (en) 2012-06-29 2015-06-09 Rosemount Inc. Industrial process temperature transmitter with sensor stress diagnostics
US9602122B2 (en) * 2012-09-28 2017-03-21 Rosemount Inc. Process variable measurement noise diagnostic
EP2830065A1 (en) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency
TWI503687B (zh) * 2013-08-08 2015-10-11 Univ Asia 適應性線性時變濾波方法
US20170188147A1 (en) * 2013-09-26 2017-06-29 Universidade Do Porto Acoustic feedback cancellation based on cesptral analysis
US9324338B2 (en) * 2013-10-22 2016-04-26 Mitsubishi Electric Research Laboratories, Inc. Denoising noisy speech signals using probabilistic model
CN103903632A (zh) * 2014-04-02 2014-07-02 重庆邮电大学 一种多声源环境下的基于听觉中枢系统的语音分离方法
CN104064195A (zh) * 2014-06-30 2014-09-24 电子科技大学 一种噪声环境下的多维盲分离方法
US9762742B2 (en) 2014-07-24 2017-09-12 Conexant Systems, Llc Robust acoustic echo cancellation for loosely paired devices based on semi-blind multichannel demixing
CN104700119B (zh) * 2015-03-24 2018-02-13 北京机械设备研究所 一种基于卷积盲源分离的脑电信号独立分量提取方法
US9191494B1 (en) * 2015-04-06 2015-11-17 Captioncall, Llc Device, system, and method for performing echo cancellation in different modes of a communication device
US10410641B2 (en) 2016-04-08 2019-09-10 Dolby Laboratories Licensing Corporation Audio source separation
TWI622043B (zh) * 2016-06-03 2018-04-21 瑞昱半導體股份有限公司 聲源分離方法與裝置
US10593351B2 (en) * 2017-05-03 2020-03-17 Ajit Arun Zadgaonkar System and method for estimating hormone level and physiological conditions by analysing speech samples
FR3067511A1 (fr) * 2017-06-09 2018-12-14 Orange Traitement de donnees sonores pour une separation de sources sonores dans un signal multicanal
JP6345327B1 (ja) * 2017-09-07 2018-06-20 ヤフー株式会社 音声抽出装置、音声抽出方法および音声抽出プログラム
KR102556098B1 (ko) * 2017-11-24 2023-07-18 한국전자통신연구원 심리음향 기반 가중된 오류 함수를 이용한 오디오 신호 부호화 방법 및 장치, 그리고 오디오 신호 복호화 방법 및 장치
US10657981B1 (en) * 2018-01-19 2020-05-19 Amazon Technologies, Inc. Acoustic echo cancellation with loudspeaker canceling beamformer
CN110875045A (zh) * 2018-09-03 2020-03-10 阿里巴巴集团控股有限公司 一种语音识别方法、智能设备和智能电视
EP3834200A4 (en) 2018-09-12 2021-08-25 Shenzhen Voxtech Co., Ltd. SIGNAL PROCESSING DEVICE INCLUDING MULTIPLE ELECTROACOUSTIC TRANSDUCERS
CN109036455B (zh) * 2018-09-17 2020-11-06 中科上声（苏州）电子有限公司 直达声与背景声提取方法、扬声器系统及其声重放方法
CN109444841B (zh) * 2018-12-26 2020-08-04 清华大学 基于修正切换函数的平滑变结构滤波方法及系统
CN110111808B (zh) * 2019-04-30 2021-06-15 华为技术有限公司 音频信号处理方法及相关产品
CN111009257B (zh) 2019-12-17 2022-12-27 北京小米智能科技有限公司 一种音频信号处理方法、装置、终端及存储介质
TWI744036B (zh) 2020-10-14 2021-10-21 緯創資通股份有限公司 聲音辨識模型訓練方法及系統與電腦可讀取媒體
CN112489675A (zh) * 2020-11-13 2021-03-12 北京云从科技有限公司 一种多通道盲源分离方法、装置、机器可读介质及设备
US11320471B1 (en) * 2021-06-09 2022-05-03 University Of Sharjah Method of measuring impedance using Gaussian white noise excitation

Family Cites Families (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4649505A (en) * 1984-07-02 1987-03-10 General Electric Company Two-input crosstalk-resistant adaptive noise canceller
US4912767A (en) * 1988-03-14 1990-03-27 International Business Machines Corporation Distributed noise cancellation system
JPH03269498A (ja) * 1990-03-19 1991-12-02 Ricoh Co Ltd 雑音除去方式
US5327178A (en) * 1991-06-17 1994-07-05 Mcmanigal Scott P Stereo speakers mounted on head
US5208786A (en) * 1991-08-28 1993-05-04 Massachusetts Institute Of Technology Multi-channel signal separation
JPH05316587A (ja) * 1992-05-08 1993-11-26 Sony Corp マイクロホン装置
US5251263A (en) * 1992-05-22 1993-10-05 Andrea Electronics Corporation Adaptive noise cancellation and speech enhancement system and apparatus therefor
US5732143A (en) * 1992-10-29 1998-03-24 Andrea Electronics Corp. Noise cancellation apparatus
US5383164A (en) * 1993-06-10 1995-01-17 The Salk Institute For Biological Studies Adaptive system for broadband multisignal discrimination in a channel with reverberation
US5375174A (en) * 1993-07-28 1994-12-20 Noise Cancellation Technologies, Inc. Remote siren headset
US5706402A (en) * 1994-11-29 1998-01-06 The Salk Institute For Biological Studies Blind signal processing system employing information maximization to recover unknown signals through unsupervised minimization of output redundancy
US6002776A (en) * 1995-09-18 1999-12-14 Interval Research Corporation Directional acoustic signal processor and method therefor
US5770841A (en) * 1995-09-29 1998-06-23 United Parcel Service Of America, Inc. System and method for reading package information
US5675659A (en) * 1995-12-12 1997-10-07 Motorola Methods and apparatus for blind separation of delayed and filtered sources
US6130949A (en) * 1996-09-18 2000-10-10 Nippon Telegraph And Telephone Corporation Method and apparatus for separation of source, program recorded medium therefor, method and apparatus for detection of sound source zone, and program recorded medium therefor
AU4826697A (en) * 1996-10-17 1998-05-11 Andrea Electronics Corporation Noise cancelling acoustical improvement to wireless telephone or cellular phone
JPH10124084A (ja) * 1996-10-18 1998-05-15 Oki Electric Ind Co Ltd 音声処理装置
US5999567A (en) * 1996-10-31 1999-12-07 Motorola, Inc. Method for recovering a source signal from a composite signal and apparatus therefor
US7072476B2 (en) * 1997-02-18 2006-07-04 Matech, Inc. Audio headset
FR2759824A1 (fr) * 1997-02-18 1998-08-21 Philips Electronics Nv Systeme de separation de sources non stationnaires
US6167417A (en) * 1998-04-08 2000-12-26 Sarnoff Corporation Convolutive blind source separation using a multiple decorrelation method
DE19822021C2 (de) * 1998-05-15 2000-12-14 Siemens Audiologische Technik Hörgerät mit automatischem Mikrofonabgleich sowie Verfahren zum Betrieb eines Hörgerätes mit automatischem Mikrofonabgleich
US6654468B1 (en) * 1998-08-25 2003-11-25 Knowles Electronics, Llc Apparatus and method for matching the response of microphones in magnitude and phase
US6898612B1 (en) * 1998-11-12 2005-05-24 Sarnoff Corporation Method and system for on-line blind source separation
US6606506B1 (en) * 1998-11-19 2003-08-12 Albert C. Jones Personal entertainment and communication device
US6381570B2 (en) * 1999-02-12 2002-04-30 Telogy Networks, Inc. Adaptive two-threshold method for discriminating noise from speech in a communication signal
WO2000057671A2 (de) * 1999-03-19 2000-09-28 Siemens Aktiengesellschaft Verfahren und einrichtung zum aufnehmen und bearbeiten von audiosignalen in einer störschallerfüllten umgebung
JP3688934B2 (ja) * 1999-04-16 2005-08-31 アルパイン株式会社 マイクロホンシステム
US6526148B1 (en) * 1999-05-18 2003-02-25 Siemens Corporate Research, Inc. Device and method for demixing signal mixtures using fast blind source separation technique based on delay and attenuation compensation, and for selecting channels for the demixed signals
JP2001022380A (ja) * 1999-07-07 2001-01-26 Alpine Electronics Inc ノイズ／オーディオ音キャンセル装置
US6424960B1 (en) * 1999-10-14 2002-07-23 The Salk Institute For Biological Studies Unsupervised adaptation and classification of multiple classes and sources in blind signal separation
US6594367B1 (en) * 1999-10-25 2003-07-15 Andrea Electronics Corporation Super directional beamforming design and implementation
US6549630B1 (en) * 2000-02-04 2003-04-15 Plantronics, Inc. Signal expander with discrimination between close and distant acoustic source
CN1418448A (zh) * 2000-03-14 2003-05-14 奥迪亚科技股份责任有限公司 多麦克风定向系统的适应性麦克风匹配
US20010038699A1 (en) * 2000-03-20 2001-11-08 Audia Technology, Inc. Automatic directional processing control for multi-microphone system
US8903737B2 (en) * 2000-04-25 2014-12-02 Accenture Global Service Limited Method and system for a wireless universal mobile product interface
US6879952B2 (en) * 2000-04-26 2005-04-12 Microsoft Corporation Sound source separation using convolutional mixing and a priori sound source knowledge
US20030179888A1 (en) * 2002-03-05 2003-09-25 Burnett Gregory C. Voice activity detection (VAD) devices and methods for use with noise suppression systems
US7027607B2 (en) * 2000-09-22 2006-04-11 Gn Resound A/S Hearing aid with adaptive microphone matching
AU2001294960A1 (en) * 2000-09-29 2002-04-08 Knowles Electronics, Llc. Second order microphone array
US7471798B2 (en) * 2000-09-29 2008-12-30 Knowles Electronics, Llc Microphone array having a second order directional pattern
JP4028680B2 (ja) * 2000-11-01 2007-12-26 インターナショナル・ビジネス・マシーンズ・コーポレーション 観測データから原信号を復元する信号分離方法、信号処理装置、モバイル端末装置、および記憶媒体
AU2002218911A1 (en) * 2000-12-21 2002-07-01 Mcgill University Use of the prion protein (prp) for suppression of bax-mediated apoptosis
US7206418B2 (en) * 2001-02-12 2007-04-17 Fortemedia, Inc. Noise suppression for a wireless communication device
CA2436484C (en) * 2001-02-14 2008-01-22 Gentex Corporation Vehicle accessory microphone
AU2001258132A1 (en) * 2001-05-23 2001-08-20 Phonak Ag Method of generating an electrical output signal and acoustical/electrical conversion system
US7123727B2 (en) * 2001-07-18 2006-10-17 Agere Systems Inc. Adaptive close-talking differential microphone array
US8098844B2 (en) * 2002-02-05 2012-01-17 Mh Acoustics, Llc Dual-microphone spatial noise suppression
WO2003107591A1 (en) * 2002-06-14 2003-12-24 Nokia Corporation Enhanced error concealment for spatial audio
EP1540986A1 (en) * 2002-09-13 2005-06-15 Koninklijke Philips Electronics N.V. Calibrating a first and a second microphone
EP1570464A4 (en) * 2002-12-11 2006-01-18 Softmax Inc SYSTEM AND METHOD FOR LANGUAGE PROCESSING USING AN INDEPENDENT COMPONENT ANALYSIS UNDER STABILITY RESTRICTIONS
US7142682B2 (en) * 2002-12-20 2006-11-28 Sonion Mems A/S Silicon-based transducer for use in hearing instruments and listening devices
EP1453348A1 (de) * 2003-02-25 2004-09-01 AKG Acoustics GmbH Selbstkalibrierung von Arraymikrofonen
DE10310579B4 (de) * 2003-03-11 2005-06-16 Siemens Audiologische Technik Gmbh Automatischer Mikrofonabgleich bei einem Richtmikrofonsystem mit wenigstens drei Mikrofonen
KR100486736B1 (ko) * 2003-03-31 2005-05-03 삼성전자주식회사 두개의 센서를 이용한 목적원별 신호 분리방법 및 장치
DE10316716A1 (de) * 2003-04-11 2004-10-28 Epcos Ag Bauelement mit einer piezoelektrischen Funktionsschicht
US7203323B2 (en) * 2003-07-25 2007-04-10 Microsoft Corporation System and process for calibrating a microphone array
US7424119B2 (en) * 2003-08-29 2008-09-09 Audio-Technica, U.S., Inc. Voice matching system for audio transducers
US7099821B2 (en) * 2003-09-12 2006-08-29 Softmax, Inc. Separation of target acoustic signals in a multi-transducer arrangement
US7019463B2 (en) * 2003-10-21 2006-03-28 Raymond Kesterson Daytime running light module and system
US7515721B2 (en) * 2004-02-09 2009-04-07 Microsoft Corporation Self-descriptive microphone array
US7415117B2 (en) * 2004-03-02 2008-08-19 Microsoft Corporation System and method for beamforming using a microphone array
US7688985B2 (en) * 2004-04-30 2010-03-30 Phonak Ag Automatic microphone matching
EP1640971B1 (en) * 2004-09-23 2008-08-20 Harman Becker Automotive Systems GmbH Multi-channel adaptive speech signal processing with noise reduction
US7826624B2 (en) * 2004-10-15 2010-11-02 Lifesize Communications, Inc. Speakerphone self calibration and beam forming
US7464029B2 (en) * 2005-07-22 2008-12-09 Qualcomm Incorporated Robust separation of speech signals in a noisy environment
JP4701931B2 (ja) * 2005-09-02 2011-06-15 日本電気株式会社 信号処理の方法及び装置並びにコンピュータプログラム
DE102005047047A1 (de) * 2005-09-30 2007-04-12 Siemens Audiologische Technik Gmbh Mikrofonkalibrierung bei einem RGSC-Beamformer
US7813923B2 (en) * 2005-10-14 2010-10-12 Microsoft Corporation Calibration based beamforming, non-linear adaptive filtering, and multi-sensor headset
US8702687B2 (en) * 2005-11-03 2014-04-22 Luxon, Inc. Surgical laser systems for soft and hard tissue and methods of use thereof
CN1809105B (zh) * 2006-01-13 2010-05-12 北京中星微电子有限公司 适用于小型移动通信设备的双麦克语音增强方法及系统
US20070244698A1 (en) * 2006-04-18 2007-10-18 Dugger Jeffery D Response-select null steering circuit
JP2008057926A (ja) * 2006-09-01 2008-03-13 Sanyo Electric Co Ltd タンクユニット
US20080175407A1 (en) * 2007-01-23 2008-07-24 Fortemedia, Inc. System and method for calibrating phase and gain mismatches of an array microphone
US8175291B2 (en) * 2007-12-19 2012-05-08 Qualcomm Incorporated Systems, methods, and apparatus for multi-microphone based speech enhancement

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2008106474A1 *

Also Published As

Publication number Publication date
CN101622669B (zh) 2013-03-13
US20080208538A1 (en) 2008-08-28
CN101622669A (zh) 2010-01-06
JP5587396B2 (ja) 2014-09-10
TW200849219A (en) 2008-12-16
JP2010519602A (ja) 2010-06-03
KR20090123921A (ko) 2009-12-02
WO2008106474A1 (en) 2008-09-04
JP2013117728A (ja) 2013-06-13

Similar Documents

Publication Publication Date Title
US8160273B2 (en) Systems, methods, and apparatus for signal separation using data driven techniques
US20080208538A1 (en) Systems, methods, and apparatus for signal separation
US8175291B2 (en) Systems, methods, and apparatus for multi-microphone based speech enhancement
US7366662B2 (en) Separation of target acoustic signals in a multi-transducer arrangement
KR101340215B1 (ko) 멀티채널 신호의 반향 제거를 위한 시스템, 방법, 장치 및 컴퓨터 판독가능 매체
Doclo et al. GSVD-based optimal filtering for single and multimicrophone speech enhancement
JP5456778B2 (ja) 了解度の向上のためのシステム、方法、装置、およびコンピュータ可読記録媒体
Nesta et al. A flexible spatial blind source extraction framework for robust speech recognition in noisy environments
Doclo et al. Multimicrophone noise reduction using recursive GSVD-based optimal filtering with ANC postprocessing stage
Maas et al. A two-channel acoustic front-end for robust automatic speech recognition in noisy and reverberant environments
WO2020064089A1 (en) Determining a room response of a desired source in a reverberant environment
Yoshioka et al. Noise model transfer: Novel approach to robustness against nonstationary noise
Zhang et al. Ica-based noise reduction for mobile phone speech communication
Novoa et al. Exploring the robustness of features and enhancement on speech recognition systems in highly-reverberant real environments
Kavruk Two stage blind dereverberation based on stochastic models of speech and reverberation
Kim Interference suppression using principal subspace modification in multichannel wiener filter and its application to speech recognition
RU2417460C2 (ru) Выделение сигнала вслепую

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080331

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20170323

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180203